Over 1300 women experience PP each year in the UK (1 to 2 in every 1000 deliveries). These episodes can be very frightening for women, their partners, friends and family. It can be hard to find high quality information about PP. There are many unanswered questions and areas where much more research is needed.  APP is a network of women across the UK and further afield who have experienced PP. It is a collaborative project run by women who have experienced PP and academic experts from Birmingham and Cardiff Universities.